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Greenheck ERV-45 User Manual

Greenheck ERV-45
32 pages
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Only qualified personnel should install this system.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards. Other
considerations may be required if high winds or seismic
activity are present. If more information is needed,
contact a licensed professional engineer before moving
forward.
1. Follow all local electrical and safety codes, as well
as the National Electrical Code (NEC), the National
Fire Protection Agency (NFPA), where applicable.
Follow the Canadian Electrical Code (CEC) in
Canada.
2. All moving parts must be free to rotate without
striking or rubbing any stationary objects.
3. Unit must be securely and adequately grounded.
4. Do not spin fan wheel faster than maximum
cataloged fan RPM. Adjustments to fan speed
significantly effects motor load. If the fan RPM is
changed, the motor current should be checked to
make sure it is not exceeding the motor nameplate
amps.
5. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces or chemicals.
Replace cord immediately if damaged.
6. Verify that the power source is compatible with the
equipment.
7. Never open access doors to the unit while it is
running.
General Safety Information
DANGER
Always disconnect power before working on or near
this equipment. Lock and tag the disconnect switch or
breaker to prevent accidental power up.
CAUTION
When servicing the unit, the internal components may
be hot enough to cause pain or injury. Allow time for
cooling before servicing.
CAUTION
Precaution should be taken in explosive atmospheres.
®
Energy Recovery Ventilator 1
®
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
Document 476412
Model ERV
Energy Recovery Ventilators
Energy Recovery Technical Support
Call 1-800-240-0870

Questions and Answers:

Greenheck ERV-45 Specifications

General IconGeneral
BrandGreenheck
ModelERV-45
CategoryFan
LanguageEnglish

Summary

General Safety Information

DANGER Warnings

Critical safety warnings requiring immediate attention before working on or near equipment.

CAUTION Advisories

Important advisories regarding hot components or hazardous atmospheres during operation.

Installation and Dimensional Data

Installation Details for Larger Models

Service Clearances

Recommended Service Clearances Table

Specifies minimum required clearances for unit maintenance and component access.

ERV-10, ERV-20, ERV-45 Clearance Diagrams

Diagrams showing service access points and required clearances for smaller ERV units.

Service Clearances for Larger Models

ERV-90, ERV-120 Clearance Diagrams

Diagrams showing service access points and required clearances for larger ERV units.

Electrical Information and Grounding

Electrical Grounding and Wiring Codes

Details electrical grounding requirements and conformance to national electrical codes.

Voltage Supply and Imbalance Tolerances

Discusses acceptable voltage tolerances and the impact of phase imbalance on motors.

Control Center Components

Typical Control Center Component Layout

Identifies and labels key electrical and control components within the unit's control center.

Optional Component Overview

Economizer Operation Modes

Explains economizer modes and sensor requirements for free cooling operation.

Frost Control Options

Details three optional methods to prevent or control frost formation on the energy recovery wheel.

Start-Up Procedures

General Start-Up Information

Outlines the importance of a comprehensive start-up for proper operation and future maintenance.

Pre Start-Up Checklist

A checklist to ensure all preliminary safety and installation steps are completed before unit start-up.

Start-Up Checklist

A detailed checklist to be completed during the unit's initial operational phase and data recording.

Start-Up Components Inspection

Component Inspection and Operation Checks

Economizer Control and Operation

Frost Control and VFD Setup

Variable Frequency Drive Configuration

Factory Set Points for VFDs

Overview of factory default settings for VFDs in modulating and multi-speed fan control.

VFD Set Points and Economizer Control

Routine Maintenance Procedures

Component Maintenance Details

Energy Recovery Wheel Servicing

ERW Cleaning and Economizer Alarm Troubleshooting

Cleaning the Energy Recovery Wheel

Methods for cleaning the ERW matrix to ensure maximum operating efficiency.

Troubleshooting Airflow Issues

Test and Balance Report Analysis for Airflow

Guides on analyzing airflow data from TAB reports to identify and resolve low airflow problems.

Troubleshooting Unit Operations

Blower Fails to Operate

Identifies possible causes and corrective actions for blower operational failure.

Motor Starters Chatter or Do Not Pull In

Addresses issues with motor starters not engaging correctly, causing intermittent operation.

Motor Over Amperage Issues

Explains common causes and solutions for motor amperage exceeding rated limits.

Low Airflow (CFM) Problems

Troubleshooting steps for diagnosing and correcting insufficient airflow through the unit.

Unit Troubleshooting Continuations

High Airflow (CFM) Problems

Addresses causes and corrective actions for excessive airflow through the unit.

Intermittent Blower Operation

Investigates reasons for blowers turning off and on intermittently, often related to controls.

Energy Wheel Operation Issues

Diagnoses problems related to the energy wheel not turning or running intermittently.

Excessive Noise or Vibration

Identifies common sources of noise and vibration and provides corrective actions.

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